Question : Browser DNS issues

I have IE and FF browsers and they generally work fine, except today with one particular site. The site will load for others (it did for me earlier in the day), and I can ping the web address and receive a reply, but it won't load in either browser. I had this occur with another site a while ago. I assume it is a DNS issue, any ideas please. I've tried ipconfig /flushdns

NB: this problem is ONLY known to be occuring with one particular website, others load fine.

Answer : Browser DNS issues

The site loads ok today, so I guess my provider's dns corrected itself overnight (no changes were made to the domain dns). Strange, this is not the first time, it's occured at least once before with another domain.